Device for mechanically lifting cops on ring spinning and twisting machines

ABSTRACT

A device for mechanically lifting cops on ring spinning and twisting machines in which in the longitudinal direction of the spinning machine fork rails are arranged one behind the other and are mounted in forks which are adjustable as to height, the fork rails are provided with lifting means for each of the cops, and the forks are adapted to be raised and lowered by actuating means, for instance, in the form of a gear spindle, chains, draw rods, or reversing means.

United States Patent 1191 Thoma et al.

11] 3,822,540 [45] July 9, 1974 DEVICE FOR MECHANICALLY LIFTING COPS ONRING SPINNING AND TWISTING MACHINES [75] Inventors: Friedrich Thoma;Peter Krusche,

both of Bremen, Germany [73] Assignee: Fried Krupp Gesellschaft mitbeschrankter Haftung, Essen, Germany 221 Filed: Oct. 6, 1972 21 Appl.No.: 295,491

[30] Foreign Application Priority Data Oct. 8, 1971 Germany ..2l50212[52] US. Cl. 57/52 [51] Int. Cl D0lh 9/08 [58] Field of Search 57/52,53, 54, 34 R [56] f References Cited UNITED STATES PATENTS Newsholme57/52 1,683,839 9/1928 Moorhouse 57/52 2,582,696 l/1952 Haythornthwaite57/52 3,129,552 4/1964 Negishi 57/52 3,466,863 9/1969 Wachendorf...57/52 3,678,672 7/1972 Brissey et al 57/52 Primary Examiner-JohnPetrakes Attorney, Agent, or FirmWalter Becker [5 7] ABSTRACT A devicefor mechanically lifting cops on ring spinning and twisting machines inwhich in the longitudinal direction of the spinning machine fork railsare arranged one behind the other and are mounted in forks which areadjustable as to height, the fork rails are provided with lifting meansfor each of the cops, and the forks are adapted to be raised and loweredby actuating means, for instance, in the form of a gear spindle,

chains, draw rods, or reversing means.

4 Claims, 5 Drawing Figures PATENTEUJUL 9|974 sum 3 or 5 DEVICE FORMECHANICALLY LIFIING COPS ON RING SPINNING AND TWISTING MACHINES Thepresent invention relates to a mechanically operated'cop lifting devicefor effecting a detachment of the firm seat of large cops on theirspindles. With very heavy cops detaching forces of approximately from'to 30 kp are necessary which is too much for a manual much asadditional pressure producing units are required for the air or the oil.Moreover, such structures also require considerable electric equipment.

Furthermore, in connection with the operation by means of pressuremedium conveying hoses fork benches are known which are equipped withforks for lifting the cops.

It is, therefore, an object of the present invention to provide amechanical lifting device for cops which has mechanical elements whichcan easily be observed and inspected by the operator and which caneasily be repaired.

.This object and other objects and advantages of the invention willappear more clearly from the following specification in connection withthe accompanying drawings, in which:

FIG. 1 is a front view of a cop lifting device according to theinvention. r

FIG. 2 is a top view of FIG. 1.

FIGS. 3 and 4 show sections through a fork rail for use in connectionwith the device of the invention, on the lines 111 III and IV IV of FIG.2, respectively.

' or feed rod of FIG. 2.

The device for mechanically lifting cops on ring spin- 1- ning andtwisting machines according to the present invention is characterized inthat in the longitudinal direction of the'spinning machine there aremounted fork rails which are arranged one behind the other and arearranged in forks which are guided so as to be adjustable as to height.Each of these fork rails are equipped with hoisting means for severalcops, and the forks are by means of spindles, chains,deflecting devicesor draw rods adapted to be raised.

It is provided according to the invention that the fork rails forlifting the cops loosely rest in the guided forks and are prevented fromdropping out.

Furthermore, if desired, turnbuckles may be interposed in the draw rodsfor a successive adjustment of delays in the lifting movement of theindividual fork rails. The last fork rail will then be lifted only afterthe expiration of a set time. It is, of course, also possible to makethe adjustment for a desired synchronous lifting.

Referring now to the drawings in detal, fork rails l are provided eachof them below several cops 26 of a ring spinning machine and, morespecifically, above the housing for the drive. Each of the fork rails 1comprises a flat iron and several round pins 28 of which each two 2 areadapted to engage a cop 26 from below. The fork rails 1 havelengthscorresponding to the machine subdivisions (about 1,000 to 1,500 mm) andare located in forks 2 which in their turn are guidedadjustably as toheight in vertical guiding means 3. The fork rails 1 rest only looselyin the forks 2 and are by means of threaded pins 4 (FIG. 4) securedagainst dropping out so that it will not be necessary to lift all forks2 absolutely uniformly.

The lifting of the forks 2 is in the particular embodiment showneffected by means of lifting chains 5 which are linked to connections 7provided one horizontally extending draw rod 6. The deflection of thelifting chains 5 is effected by means of sprocket wheels 8 which arejoumalled in the vertical guiding means 3. These guiding means 3 areconnected to the spindle rails 9.

At the left end of the whole spinning machine the draw rod 6 mergesthrough the connection 27 with'a .chain 10 which is adapted to be woundonto a chain wheel 11. The sprocket wheel l1-is keyed to one end of ashaft 12. To the other end of shaft 12 there is keyed a second chainwheel 13 the chain 14 of which is connected to a gear spindle 15 (FIG.5). When by means of the electric motor 16 the sprocket wheel 17 isdriven, the gear spindle 15 which is by means of a key 18 prevented fromturning will move in the longitudinal direction 29.

By reversing the polarity of motor 16, the spindle 15 may be moved inopposite direction.

Simultaneously with the shaft 12, two adjustable cam rings 20 and 21rotate which by actuation of limit switches 22 and 23 are adapted tostop the motor 16 and to reverse its polarity. In view of the angularposition of the two cam rings 20 and 21, it is possible to adjust thestroke 25 of the fork rail 1.

By pressing a button, the device is being actuated. If desired, thedevice may also be started automatically following the doffing motion.

It will be appreciated that the cops 26 are lifted by the motor 16 andthat during its return movement the mechanical elements will drop downagain due their own weight. I

To save additional mechanismsfor lifting the ring rail 30 (FIG. 3), eachfork rail 1 has its ends respectively provided with a relatively longpin 19. These pins 19 engage the ring rail 30 from below and aid inlifting the same. Care must be taken in this connection only that thetension members 31 of the ring rail 30 do not thread out of theirdeflection rollers 32.

Inasmuch as with long machines, with firmly seated sleeves and, aboveall, when allcops 26 have to be lifted simultaneously, the liftingforces would be extremely high and could amount to several tons, it isprovided according to the invention that by means of turnbuckles 24 thepull chains 5 may be successively adjusted with such looseness that eachfork rail is lifted somewhat later than the preceding fork rail. Thusthe last fork rails-will be lifted later than the first fork rail 1 byapproximately from 60 to mm. One turnbuckle 24 each is provided inthedraw rod 6 for each machine subdivision. By means of the firstturnbuckle 24 shown in FIGS. 1 and 2, for example, the length of thedraw rod 6 is increased by about 5 mm. Therefore, the succeeding liftingchain 5 (right hand in FIGS. 1 and 2) will have looseness amounting 5mm. Winding the chain 10 on the chain wheel 11 will thus result in 3lifting chain 5 being first tensioned before it initiates lifting of thefork 2 on right hand in FIGS. 1 and 2. Inasmuch as for loosening thesleeves from the spindles only a stroke of approximately 50 mm isneeded, the forces are reduced approximately by one half.

It is, of course, to be understood that the present invention is, by nomeans, limited to the particular show ing in the drawings but alsocomprises any modifications within the scope of the appended claims.

What we claim is:

1. In a ring spinning and ring twisting machine for mechanically liftingcops, which comprises in combination rail means with means forrespectively engaging from below the cops to be lifted, a device whichincludes: supporting means arranged in spaced relationship to each otherand one behind the other when viewed in the longitudinal direction ofthe machine, said supporting means being adapted to receive and supportsaid rail means and being adjustable as to height, and actuating meansincluding cam ring means according to angular position of which there ispossible adjustment of stroke of said rail means and operativelyconnected to said supporting means and operable selectively to raise andlower said supporting means and thereby said rail means, said actuatingmeans including pull rods and turnbuckles in said pull rods forselectively and respectively adjusting delays in the movement ofsuccessive supporting means, the means of the rail means for engagingfrom below the cops to be lifted including two pins.

2. An arrangement according to claim 1, in which said supporting meansinclude fork-shaped portions for receiving said rails therein.

3. An arrangement according to claim 2, in whichsaid rail means areprevented from accidentally leaving said fork-shaped portions.

4. An arrangement according to claim 1, in which said rail means includerelatively long pins for engaging also a ring rail from below.

1. In a ring spinning and ring twisting machine for mechanically liftingcops, which comprises in combination rail means with means forrespectively engaging from below the cops to be lifted, a device whichincludes: supporting means arranged in spaced relationship to each otherand one behind the other when viewed in the longitudinal direction ofthe machine, said supporting means being adapted to receive and supportsaid rail means and being adjustable as to height, and actuating meansincluding cam ring means according to angular position of which there ispossible adjustment of stroke of said rail means and operativelyconnected to said supporting means and operable selectively to raise andlower said supporting means and thereby said rail means, said actuatingmeans including pull rods and turnbuckles in said pull rods forselectively and respectively adjusting delays in the movement ofsuccessive supporting means, the means of the rail means for engagingfrom below the cops to be lifted including two pins.
 2. An arrangementaccording to claim 1, in which said supporting means include fork-shapedportions for receiving said rails therein.
 3. An arrangement accordingto claim 2, in which said rail means are prevented from accidentallyleaving said fork-shaped portions.
 4. An arrangement according to claim1, in which said rail means include relatively long pins for engagingalso a ring rail from below.